javascript - Chrome/jQuery Uncaught RangeError: Maximum call stack size exceeded

Question

I am getting the error "Uncaught RangeError: Maximum call stack size exceeded" on chrome. here is my jQuery function

$('td').click(function () {
        if ($(this).context.id != null && $(this).context.id != '') {
            foo($('#docId').val(), $(this).attr('id'));
        }
        return false;
    });

Note that there are tens of thousands of cells in the page. However, I generally associate stack overflows with recursion and in this case as far as I can see there is none.

Does creating a lambda like this automatically generate a load of stuff on the stack? is there any way round it?

At the moment the only workaround I have is to generate the onclick events explicitly on each cell when rendering the HTML, which makes the HTML much larger.

Answer 1

As "there are tens of thousands of cells in the page" binding the click-event to every single cell will cause a terrible performance problem. There's a better way to do this, that is binding a click event to the body & then finding out if the cell element was the target of the click. Like this:

$('body').click(function(e){
       var Elem = e.target;
       if (Elem.nodeName=='td'){
           //.... your business goes here....
           // remember to replace $(this) with $(Elem)
       }
})

This method will not only do your task with native "td" tag but also with later appended "td". I think you'll be interested in this article about event binding & delegate

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Or you can simply use the ".on()" method of jQuery with the same effect:

$('body').on('click', 'td', function(){
        ...
});